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A sand filter can be used with your saltwater pool, but this is not your only option. Sand filters are the best form of a pool filter and saltwater pool owners commonly use them for both commercial and home use. Sand filters offer the lowest level of filtration as compared to other types of filters. However, they are the cheapest option.

Saltwater pools are popular because they are eco-friendly and make you feel like you are in the middle of the ocean. Many saltwater pool owners want to know how to filter them. Can a regular sand filter work? In this article, we answer the question for you.

Can You Use Sand Filters for Saltwater Pools?

Sand filters are extremely popular because they are highly affordable and also get the job done. Sand filters are unable to catch particles that are as small as salt. Most pool owners like to use sand filters, but that is not the only choice.

Salt water doesn’t make a major difference when it comes to filtering water. The particles are smaller as compared to the water. You can use a sand filter with saltwater pool systems but there are other options that you might consider. Sand filters are the cheapest option and will save you big money.

A sand filter helps to catch the dirt and particles before they return the water to the pool. A sand filter helps to filter out particles that are as small as 10-20 microns. A sand filter holds 50 lbs – 700 lbs of sand so an average-sized pool filter that has around 200 lbs of sand capacity will cost you around $100-$200 to fill up.

sand filter

Sand filters must be backwashed and you should rinse and wash the dirt out because the sand holds all the contaminants that are inside the water. Your water needs to be topped when it gets drained. A sand filter can be back washed using the pressure gauge.

This is when the waste valve is opened so the water gets pumped out for a few minutes until the water is clear. Sand typically should be replaced every 5-7 years but It depends on the size of the pool and how dirty it gets.

How Much You Need to Spend on a Saltwater Pool’s Sand Filter?

If you have a saltwater pool, then you don’t need to get a special filter for it. You can choose any type of good quality sand pool pump from Poolking. Most sand filters are available in the range of $300 to $1000. They are easy to install and use.

How to Use a Sand Filter in a Salt Water Pool? 

The sand filter in the saltwater pool allows to maintain hygiene in the water. It also makes the water safer for use. Here is how to use a sand filter for your saltwater pool.

1. Safety Precautions

When you start installing the sand filter in a saltwater pool, you should always make sure that the electric supply is cut off. Pull the electric chord out before the installation process.

2. Connecting the Filter and Pump

Connect the pool pump and the filter using a hose. Attach the hose directly to the pump valve and the other end of the filter's inlet valve.

3. Holding in Place

The hose clamp allows you to hold the connection that is established with the help of the screwdriver and other equipment. Make sure to tighten the clamps.

Connect the sand filter to the return jet. Make sure to connect the hose to the outlet of the filter properly.  

4. Stay Cautious 

When installing the sand filter in the saltwater pool you must check the connection. Clamps should also be secured tightly.

5. Checking the Reading

There are some procedures that you must follow while the sand filter is installed. Pressure readings should be checked every week. If the reading is above 10 pounds and is more than the initial it might be an indication that the sand filter should be cleaned.

sand filter

6. Backwashing

Backwashing is a technique that helps to remove the dirt and debris that is stuck on the sand filter. This is done by backwashing the water's flow.

7. Backwashing Technique

The multi-port valve located on the filter should be pressed to settle on the backwashing setting. The air hose and the motor of the pump should be turned on. Switch off the pump when the water clears off.

8. Maintaining the Filter

While using the sand filter it is important to know how to replace the sand. In general, the sand has to be replaced at least once in four years.

9. Replacing the Sand

Replacing the sand is a bit technical and it is a good choice to call out a professional for help. To replace the sand, it is important to first drain out the filter. Make sure to take off the plug before you begin the process. Remove the multi-port valve by using the dome. Grab the sand out from the filter by using an industrial vacuum cleaner. Replace the old sand with new sand.

10. Follow the Instructions Properly 

When you replace the sand, it is best to follow the manufacturer’s instructions. It is always a good idea to filter up to 75% as this would work well to clean your pool water.

11. Caution

While using the sand filter, you may find some leaks. This should be fixed immediately. You can use silicon sealers and cover up the leaks.


A sand filter is one of the oldest forms of pool filter. Many high-quality sand pool filters are available at Poolking and you can consider buying one suitable for your pool. Different types of pool pumps and filters offer different levels of filtration so you must make your choice wisely according to the condition of your pool.

Sand filters also need regular backwashing which requires rinsing the water out every week. You can use a sand filter for your saltwater pool as it is the cheapest option overall, and doesn’t involve much effort and work.

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